171results about How to "Cost efficient" patented technology

The invention relates to a platform management method and system based on low code development, and the method comprises the steps: obtaining a plurality of heterogeneous data sources, extracting first data from the plurality of heterogeneous data sources, and carrying out the preprocessing of the first data, and obtaining standard data used for constructing a knowledge graph; and acquiring a plurality of different entities and entity relationships among the different entities from the standard data, and constructing the knowledge graph according to the plurality of different entities and the entity relationships among the different entities. And mapping entity nodes in the knowledge graph and entity relationships among different entity nodes to a low-dimensional space through a graph embedding model to perform vector representation so as to extract global knowledge including the entity relationships among different entity nodes and a network topology structure. And acquiring a predefined business process and a plurality of corresponding decision points when the business process is executed, and evaluating an execution result of the business process by executing global knowledge and a current business process variable to obtain a corresponding guidance decision.

The invention provides a warehouse site selection method and system. The method comprises the following steps: obtaining order information and target demand information corresponding to a target merchant, and network optimization constraint information corresponding to the target demand information; wherein the target demand information comprises a target scene and a target demand; the target demand is the optimal cost or the optimal time efficiency; if the target scene is a long-term optimization scene, determining at least one warehouse according to the commodity demand and network optimization constraint information of each city in the order information; determining a plurality of warehouse combination schemes according to a preset warehouse range, the at least one warehouse and the network optimization constraint information, and determining the service cost and the timeliness of each warehouse combination scheme; and according to the business cost and the timeliness of each warehouse combination scheme, determining the city corresponding to the preposed warehouse in the warehouse combination scheme with the optimal business cost or the optimal timeliness matched with the target demand in each warehouse combination scheme as a preposed warehouse address.

The invention discloses a tunnel disease data extraction and calibration method, and particularly relates to the technical field of tunnel disease detection. Comprising the following steps: S1, establishing a tunnel BIM model coordinate system; s2, calibrating the positioning precision of a high-definition camera and a three-dimensional laser scanner through a tunnel BIM model coordinate system; s3, collecting tunnel disease information by using a high-definition camera and a three-dimensional laser scanner; s4, extracting feature points of the tunnel disease information; and S5, converting the two-dimensional coordinates of the feature points into three-dimensional coordinates in an actual space. By adopting the technical scheme of the invention, the problem of low positioning accuracy in a traditional tunnel disease detection method is solved, the accuracy and efficiency of tunnel disease detection are improved, and the safety and stability of a tunnel structure are ensured.

The medium-temperature radial forging method comprises the steps that pretreatment is conducted, specifically, a niobium-tungsten alloy extrusion bar blank is heated for 60-180 minutes at the temperature of 750-950 DEG C, rapid forging and straightening are conducted, and a medium-temperature radial forging bar blank is obtained and annealed for 60-120 minutes at the temperature of 1250-1450 DEG C; medium-temperature radial forging is conducted, specifically, a two-step method is adopted, in the first step, a bar blank is preheated to 80-100 DEG C and coated with Ta1350 high-temperature glass powder, heat preservation is conducted for 90-180 minutes at the temperature of 1050-1150 DEG C, and the bar blank is forged into a bar with the diameter of 70 + / -1 mm in the mode that the diameter is reduced by 7-10 mm every time; and in the second step, the heating and coating processes are repeated, the diameter is reduced by 5-7 mm every time, and the bar with the required specification is manufactured. By optimizing the medium-temperature forging and annealing process, the fine grain structure is controlled, the high-temperature mechanical property, creep resistance and oxidation resistance of the material are improved, and the material is suitable for aerospace engines and other high-temperature and high-pressure scenes. Compared with a traditional method, the technology improves the yield, shortens the production period, reduces the labor intensity, is suitable for large-scale production, reduces surface air suction, oxidation and burning loss, and improves the production efficiency and the finished product quality.

The invention discloses a solid composite carbon source for sewage denitrification and a preparation method thereof. The composite carbon source is prepared from the following components in parts by weight: 10 to 60 parts of sodium acetate, 10 to 30 parts of glucose, 10 to 30 parts of starch, 0.1 to 2 parts of yeast powder, 1 to 5 parts of cellulose and 0.1 to 0.3 part of glycosyl hydrolase. Sodium acetate in the composite carbon source can react quickly, an instantaneous carbon source is provided, glucose and starch can be utilized by microorganisms for a long time, and durability of the carbon source is guaranteed. The invention also provides a sewage treatment method using the composite carbon source, and the method comprises the following steps: adding the composite carbon source into sewage, and carrying out denitrification treatment. The addition amount of the composite carbon source is determined based on the C / N ratio in the sewage. By adding the composite carbon source, the content of nitrate nitrogen in sewage can be effectively reduced, so that the sewage treatment efficiency is improved. The composite carbon source exists in a solid form, is convenient to store and transport, and reduces the influence on the environment. The composite carbon source not only can obviously improve the sewage treatment effect and improve the effluent quality, but also can reduce the operation cost and additional cost, and has important significance for improving the environment.

The invention provides cellulose-based electronic carrier tape paper and a preparation method thereof, and the preparation method comprises the following steps: step (1): soaking a first wood pulp board in water until fibers are swelled, and pulping to obtain pulp; step (2), enabling the basalt nanosheet to react with polyvinylpyrrolidone, so as to obtain a carbonyl modified basalt nanosheet; (3) soaking the second wood pulp board in water until the second wood pulp board is completely defibered to obtain paper pulp, grinding the paper pulp, and carrying out micro-jet nano-homogenization treatment to obtain a cellulose nano-fibril suspension; and (4) uniformly mixing the cellulose nanofibril suspension, carbonyl modified basalt nanosheets and an antistatic agent with the slurry prepared in the step (1), forming a paper sample to obtain a wet paper sheet, and drying to obtain the cellulose-based electronic carrier tape paper. The cellulose-based electronic carrier tape paper prepared by the invention is obviously superior to the traditional electronic carrier tape paper in the aspects of environmental protection, cost, electrostatic protection and mechanical property.

The present invention relates to a pharmaceutical composition with joint repair efficacy, which is composed of collagen, chitosan and a pharmaceutically acceptable carrier, wherein the weight ratio of collagen to chitosan in the composition is 11:1-1:11, the average molecular weight of collagen is 3kDa-500kDa, and the weight average molecular weight of chitosan is 10000-200000. The pharmaceutical composition of the present invention is used to treat and relieve pain caused by joint cavity stenosis and bone wear, effectively prevent and treat traumatic or degenerative osteoarthritis, and has the advantages of good water solubility, good biocompatibility, fast onset, good repair effect, good stability, good re-dissolution stability, long effective period, easy storage, etc.

The invention relates to a glucosamine sulfate composition, which consists of the following components in percentage by weight: 58.0 to 90.0 percent of glucosamine sulfate sodium chloride double salt, 8.0 to 40.0 percent of diluent and 2.0 to 6.0 percent of lubricant. The components and proportion of the composition are scientifically screened, the prepared composition has the advantages of high stability, good in-batch dissolution and inter-batch dissolution uniformity, high bioavailability and the like, and technical guarantee is provided for effectiveness and safety of clinical medication.

The invention relates to the field of water treatment and wastewater resource recovery, in particular to a resourceful treatment method for magnesium sulfate wastewater in rare earth smelting. The method comprises the following steps: adding precipitant slurry and magnesium sulfate wastewater into a base solution for reaction to obtain mixed slurry containing calcium sulfate; and separating the mixed slurry containing calcium sulfate to obtain calcium sulfate crystals, magnesium hydroxide and recycled liquid. The invention provides a low-cost resourceful treatment method for rare earth smelting magnesium sulfate wastewater. The simple one-step precipitation process is adopted, the cost is superior to that of an existing magnesium sulfate wastewater evaporative crystallization treatment process, meanwhile, the reaction process is one-step precipitation, and the process is superior to that of a multi-step precipitation resourceful treatment magnesium sulfate wastewater process. The calcium sulfate crystal obtained by the method is large in size and easy to separate from magnesium hydroxide, the magnesium hydroxide and the calcium sulfate crystal with higher purity are recovered, and resource recycling of the magnesium hydroxide, the calcium sulfate crystal and the recycling liquid is realized.

The invention discloses an economic dispatching method for a shared energy storage power station to participate in power grid auxiliary service, which belongs to the field of renewable energy consumption, and comprises the following steps of: randomly sampling scene samples in each time period in a day by utilizing Latin hypercube sampling based on a renewable energy output probability model and an electric and thermal load probability model; a plurality of representative scenes are found out, the representative scenes are spliced to form a daily scene curve set, the daily scene curve set is substituted into a daily operation cost model, an operation strategy of the shared energy storage power station with the optimal cost is obtained, and the problems that output between wind power and photovoltaic power is influenced by climate, daily real-time scheduling of loads fluctuates and the like can be solved to a certain extent. The utilization rate of renewable energy sources is improved, and the power generation cost is reduced. The daily operation cost model considers cost factors in a plurality of aspects, such as power grid electricity purchase cost and service fee paid to the energy storage power station, can comprehensively evaluate economical efficiency and environmental influence of user energy consumption, and provides a scientific basis for energy management and decision making.

The invention relates to a CO2 catalytic conversion catalyst and a preparation method and application thereof.The preparation method of the catalyst comprises the steps that a silicon source, an aluminum source and an inorganic acid aqueous solution are weighed to form white sol, then centrifugation, washing and drying are conducted, white silicon-aluminum composite oxide powder is obtained, a binder is added, rolling ball forming is conducted, and a silicon-aluminum composite oxide carrier precursor is obtained; and weighing the first active component precursor, the second active component precursor and the auxiliary component precursor, loading the precursors on the silicon-aluminum composite oxide carrier precursor in a dipping manner, drying, and roasting to obtain the CO2 catalytic conversion catalyst. Compared with the prior art, the catalyst provided by the invention has the advantages of high activity, high selectivity, high stability and the like in the CO2 reverse water gas shift reaction.

The invention provides a sulfone polymer hollow fiber ultrafiltration membrane, a preparation method and application thereof, and an assembly with the ultrafiltration membrane. When the hole density of the outer liquid outlet surface of the sulfone polymer hollow fiber ultrafiltration membrane is small, the membrane overall flux is still good under a specific structure in which the SEM average pore size of the outer liquid outlet surface, the ratio of the SEM average pore size of the inner liquid inlet surface to the SEM average pore size of the outer liquid outlet surface, the overall pore size of the ultrafiltration membrane and the value of the porosity are within a specific range; meanwhile, the effects of excellent compression strength of the liquid level outside the membrane, excellent mechanical strength of the whole membrane and reduction of the risk that the liquid level outside the membrane is polluted are achieved, and further, when the prepared sulfone polymer hollow fiber ultrafiltration membrane is processed into an assembly, membrane filaments have excellent bonding force; the quality and the preparation success rate of the hollow fiber assembly are improved, and biological ultrafiltration under harsh conditions can be met.

The invention discloses a Cr < 3 + >-doped gallium germanate broadband near-infrared luminescent material as well as a preparation method and application thereof. The general chemical formula of the luminescent material is Y3ZnGa3-3xCr3xGeO12 (wherein 0 lt; x is smaller than or equal to 0.07), can be effectively excited by a light source of a blue light band or a red light band and emits high-brightness near-infrared light covering the range from far infrared to near infrared (600-1200 nm), and has high light-emitting quantum efficiency (gt; 95%) and excellent thermal stability (gt; 68% at 150 DEG C). The preparation process of the luminescent material is simple and environment-friendly, and the obtained product is stable in physical and chemical properties and pure in phase. In addition, by means of cosolvent doping, Cr < 3 + > ion doping concentration regulation and control and the like, effective regulation and control of luminous properties such as luminous intensity and emission peak position (770nm-830nm) of the luminescent material can be realized. The near-infrared light output power and the photoelectric conversion efficiency of a near-infrared LED light-emitting device formed by combining the light-emitting material and a commercial LED chip are relatively excellent, so that the near-infrared light-emitting device has wide application potential in the fields of night vision imaging, biomedical treatment, information anti-counterfeiting and the like.

The invention relates to the technical field of path planning, in particular to a cable path planning method based on deep learning and multi-objective optimization, and the method comprises the following steps: based on remote sensing image data, employing a multi-scale semantic segmentation deep learning model, combining with an auxiliary accessibility tagging sample, and recognizing the type of each ground feature; constructing a ground feature accessible confidence field with continuous spatial distribution; constructing a confidence coupling path cost function, endowing a penalty weight to an area with low ground feature confidence, endowing a passage reward weight to an area with high confidence, and generating a confidence coupling path cost function for path search; and constructing an improved heuristic function, and executing path search by adopting a multi-objective optimization algorithm to obtain a cable path scheme. According to the method, the historical total cost of the current node is considered, and the average confidence risk from the current node to the target direction is predicted, so that prospective avoidance is realized.

The invention discloses a power equipment nameplate automatic identification method and system based on a visual large model VLM, and the method comprises the steps: S1, carrying out the preprocessing operation of collected images, generating a corresponding label for each image, and obtaining an image data set with the labels; s2, dividing the image data set attached with the label into a training set and a test set, and performing model training and evaluation on the visual large model according to the image data set to obtain a trained visual large model VLM; s3, performing feature extraction on the preprocessed image by adopting a pre-trained visual large model VLM to obtain an identified character information key value pair; and S4, reasoning the recognized character information key value pairs, obtaining the type of the power equipment according to a preset power equipment classification model, and outputting corresponding structured information. According to the invention, the problem that the existing power equipment nameplate identification technical scheme has obvious deficiencies in the aspects of efficiency, accuracy and cost efficiency is solved.

The invention aims to provide a gas turbine blade unstable flow visualization testing method, and belongs to the technical field of gas turbine experimental testing. Comprising the following steps: inputting boundary conditions and geometric conditions of a calculation model; numerical simulation flow field data under the condition are obtained through CFD calculation; if yes, the next step is carried out, and if not, a higher-quality grid is generated and returned to the encrypted grid, and CFD numerical simulation calculation is carried out again; selecting a proper resolution ratio based on an actual demand; generating a data source quantity and obtaining CFD calculation data according to the data source quantity; and outputting the three-dimensional transient visual flow field at the moment obtained by the checked high-precision CFD numerical simulation. The actual working condition of the gas turbine blade can be simulated, the test error of an actual instrument under the severe working condition is avoided, and the test difficulty is reduced. The precision of CFD numerical simulation is optimized, and the error is reduced, so that the credibility of the three-dimensional visualization cloud picture is improved.

The invention relates to a method for decelerating a servomotor of a steering system, in particular for protection in service operating conditions, the steering device comprises a control unit for actuating the servomotor, monitoring electronics for monitoring the movement of the servomotor, and an energy store which is operatively connected to the control unit and to the monitoring electronics and is designed differently from the vehicle battery, a movement of the servomotor caused by an external force is monitored by means of monitoring electronics by evaluating a movement characteristic variable that is dependent on the movement of the servomotor, and a deceleration process is triggered in at least one operating state as a function of the movement characteristic variable, in which deceleration process the servomotor is decelerated by means of a control unit, and wherein the energy store is charged by the movement of the servomotor and, in at least one application, serves to supply energy to the control unit and the monitoring electronics.

The application discloses a kind of inventory optimization methods of charging facility spare parts replacement cycle and failure rate analysis, and the core process of this method includes building data layer, multidimensional data is cleaned and optimized, to realize standardized storage;Based on the LSTM algorithm, a multidimensional linkage prediction model is built, the loss effect of design defects and environmental factors is quantified to optimize the model, and the accurate spare parts replacement cycle threshold and equipment failure rate are output;According to the flow properties of spare parts, a differentiated inventory management mode is designed, and the optimal management mode of slow-moving parts is selected;A full-cost quantification model is built to calculate the total cost and service level under each mode;Finally, with the goal of minimizing cost, an intelligent inventory control model is built, which dynamically outputs inventory warning thresholds, replenishment quantities and times;Through the algorithmization and parameter quantification of the whole process, the application realizes fine and intelligent management of inventory, significantly reduces operating costs and stockout risk, and improves the stability of charging facilities.

The invention belongs to the technical field of chemical biotoxicity testing, and particularly relates to a chemical toxicity testing method based on a self-developed pollutant exposure system. According to the testing method, a self-developed pollutant exposure system is used for simulating the toxic effect of chemicals in a natural water body, zebra fish is adopted as a model organism, a time-concentration linear function of to-be-tested chemicals in a contaminated area is established, behavior analysis is carried out through observation of abnormal behaviors of the zebra fish or a coupled camera tracing technology, and the method is used for determining the toxic effect of the to-be-tested chemicals in the contaminated area. And calculating the minimum effect concentration of the to-be-tested chemical. The test method is almost a non-destructive experiment, the experiment time is short, most zebrafish participating in the experiment can be recovered to a normal state through proper recovery, the time cost is greatly saved, the efficiency is high, and the death rate of tested organisms is low.

A system for use in a vehicle includes at least two hydraulic damper assemblies. The system includes an injection pump in fluid communication with the hydraulic damper assemblies. The injection pump includes a barrel having an opening. The injection pump includes a plunger slidable within the barrel in a first direction and a second direction, the first direction causing hydraulic fluid to move into the barrel via the opening and the second direction causing hydraulic fluid to move out of the barrel via the opening. The system includes an actuator supported within the barrel and operatively coupled to the plunger.

This invention discloses an integrated planning method and system for a multi-jurisdictional unmanned aerial vehicle (UAV) service system. The method constructs an overall planning model with the goal of minimizing total cost, and sequentially establishes a front-end UAV allocation model and a back-end battery swapping station allocation model. With the objectives of minimizing average response time and minimizing the total expected queue length, respectively, the total number of UAVs, charging stations, and backup batteries, as well as the jurisdiction-level configuration scheme, are obtained. This invention achieves integrated collaborative planning of front-end transportation and back-end battery swapping, reducing the total system cost and average response time, balancing the operating load of each jurisdiction, effectively avoiding service interruptions due to a lack of available batteries during peak periods, and significantly improving system reliability and engineering practicality.

A method for constructing an artificial intelligence model management application based on a serverless architecture relates to the technical field of serverless architecture. The method comprises the following steps: obtaining the importance levels of different function instance categories according to historical function instance creation requests, and pre-obtaining the preheating strategy of each function instance category according to the importance level; obtaining the execution process sequence of the application function code, extracting the logical function of each execution process in the execution process sequence, segmenting the execution process sequence according to the logical function of the execution process, and matching the function instance according to the logical function of the segmented execution process sequence; obtaining the function instance timing sequence of the execution process sequence, delaying the loading of the function initialization process according to the function instance timing sequence, and judging whether the function instance meets the execution insulation strategy standard after the loaded function instance completes the logical function required by the execution process sequence; and reducing the startup delay of the serverless architecture application construction.

The invention discloses a processing method and electronic equipment, and a method applying first electronic equipment comprises the following steps: in response to input data of second electronic equipment corresponding to an input device, determining an input action corresponding to the input data; generating an output picture corresponding to the input action according to a target processing rule corresponding to the input action; and transmitting the output picture to the second electronic equipment, so that the second electronic equipment outputs the output picture, and synchronously outputs an icon picture corresponding to the input device.

A single-power-source multi-gear disordered gear shifting control mechanism and a gearbox gear shifting device comprise a power source and a lead screw which are coaxially connected, the lead screw is sequentially and coaxially sleeved with three lead screw nuts, the peripheries of the lead screw nuts are provided with a plurality of circumferential limiting grooves parallel to the axes of the lead screw nuts, the lead screw nuts are further coaxially provided with protruding rings, and the outer diameter of each protruding ring is larger than that of the corresponding lead screw nut. The convex rings and the guide blocks are sequentially and axially connected in a limiting manner; and the three limiting control units sequentially correspond to the three lead screw nuts, each limiting control unit comprises a circumferential limiting convex part matched with the circumferential limiting groove structure, and the circumferential limiting convex part is in movable limiting contact with any circumferential limiting groove. Through reasonable arrangement of component structures and adoption of the technical scheme of independent control and disordered gear shifting of all gears, the jump gear function can be achieved, the gear shifting performance is better, the advantages in the aspects of cost, performance, transmission performance, service life and the like are remarkable, and the fault risk is lower; the structure is excellent, advantages are obvious, practicability is high, and application prospects are wide.

The present application relates to a kind of dry powder inhalation of peramivir, the dry powder inhalation is composed of 50-90% peramivir and pharmaceutically acceptable carrier by weight percentage, wherein, the aerodynamic diameter (MMAD) of dry powder particle that constitutes dry powder inhalation is 1 μm-5 μm, the particle size distribution of dry powder particle is D10≤2.0 μm, D50≤4.0 μm, D90≤7.5 μm.The dry powder inhalation of the present application has the advantages of high antibacterial activity, long-acting targeting, high safety and effectiveness, good stability, high bioavailability and the like.

The invention discloses a supply chain optimization method for beer preparation in advance. Comprising the following steps: calling related parameters configured by a system page as data input; calculating the net demand of the warehouse; calculating to-be-produced capacity of a factory; calculating a capacity gap, summarizing the to-be-produced capacity of each product to a supplier factory and a production line type, and respectively calculating capacity data of the factory and the production line type; production scheduling is simulated, and the forward moving amount is calculated; calculating the maximum stock quantity; sorting a stock order; sequentially distributing according to the sequence; the result is corrected, and the advance stock quantity is output. According to the method, the optimal supplier is found for the demand, the productivity resources are uniformly distributed, cross-district communication is reduced, and the manual compiling time is saved. And meanwhile, by accurately calculating the forward moving amount, accurate planning of stock preparation is realized, the order satisfaction rate is improved with a lower stock water level, the cost is saved, and the warehouse pressure is reduced. And the stock quantity of a single product is limited in a maximum stock quantity mode, so that the stock overstock risk caused by factors such as market fluctuation is reduced.

The embodiment of the invention provides a suspension system and a vehicle. The suspension system comprises a base, a linear motor, an elastic piece and a magnetorheological damper, the base comprises a support and a lower supporting seat, one of the support and the lower supporting seat is suitable for being connected with a vehicle body, and the other one of the support and the lower supporting seat is suitable for being connected with a wheel; the linear motor comprises a stator and a rotor, one end of the rotor is connected to the support, and the end, away from the support, of the stator is connected to the lower supporting base. The elastic piece is arranged between the support and the stator and provides elastic force between the support and the stator; the magneto-rheological damper comprises an outer cylinder and a damper piston which is arranged in the outer cylinder and can move linearly relative to the outer cylinder, the magneto-rheological damper is arranged in the rotor, the outer cylinder is connected to the rotor, and the damper piston is suitable for being connected to the lower supporting base. According to the scheme, the energy consumption of the suspension system is reduced, the performance is improved, the safety redundancy is improved, and the cost is reduced.

The object of the present application is to provide a phenolic resin foam having a small load on the environment, high compression strength, excellent handling properties during construction and cost savings during fixing, and a method for producing the same. The phenolic resin foam of the present application is characterized in that it contains at least one selected from the group consisting of chlorinated hydrofluoroolefins, non-chlorinated hydrofluoroolefins and halogenated hydrocarbons, and has a density of 20 kg / m 3 Above and 100kg / m 3 Below, the independent cell ratio is 80% or more and 99% or less, and the 10% compression strength and the above density satisfy the following relationship. C≥0.5X-7 (where C represents the 10% compression strength (N / cm 2 ), X represents density (kg / m 3 )).

The invention discloses a ball-milling modified graphite phase carbon nitride photocatalytic antibacterial film and a preparation method and application thereof in the field of antibacterial materials. The ball-milling modified graphite phase carbon nitride photocatalytic antibacterial film is prepared by taking graphite phase carbon nitride (g-C3N4) as an antibacterial agent and polyvinyl alcohol as a film forming substrate in a curtain coating plate coating manner. According to the invention, ball-milled and modified carbon nitride is selected as a photocatalytic antibacterial agent and is successfully loaded on the polyvinyl alcohol film, so that the photocatalytic antibacterial activity is enhanced, and the problem that a powder catalyst is difficult to apply practically is solved. The ball-milling technology and the casting plate coating film preparation process adopted by the invention are relatively simple to operate, and the prepared ball-milling modified graphite phase carbon nitride photocatalytic antibacterial film has good visible light response characteristic and excellent antibacterial performance, is safe, non-toxic, green and environment-friendly, and has wide application prospects. Wide application prospects are realized in the fields of photocatalytic sterilization, food, fruit and vegetable preservation and the like.

The utility model discloses a front suspension lower swing arm, a front suspension lower swing arm assembly and an automobile, which comprise a swing arm body, the swing arm body extends from a first end to a second end along the length direction, the first end forms a swing arm ball pin mounting part, the second end forms a bushing pin mounting part, and the swing arm body bends outwards between the first end and the second end and is provided with a sleeve mounting part. The swing arm body comprises a swing arm upper plate, a middle reinforcing plate and a swing arm lower plate, the middle reinforcing plate is arranged in an inner cavity between the swing arm upper plate and the swing arm lower plate, and the edge of the middle reinforcing plate is welded to the box-shaped structure; the bushing pin is connected to the bushing pin mounting part of the swing arm body; and the first sleeve is connected to the sleeve mounting part of the swing arm body, and the first sleeve and the lining pin are coaxially arranged. According to the utility model, miniaturization can be implemented, the strength is better, the performance is better, the strength, the rigidity and the buckling performance are improved to the greatest extent, the operation stability and the NVH performance are effectively solved, and meanwhile, the cost is optimal.